docs: def get_object(self, group_id, mask=None):
          """Returns a PlacementGroup Object
  
          https://softlayer.github.io/reference/services/SoftLayer_Virtual_PlacementGroup/getObject
          """
          if mask is None:
              mask = "mask[id, name, createDate, rule, backendRouter[id, hostname]," \
                     "guests[activeTransaction[id,transactionStatus[name,friendlyName]]]]"
          return self.client.call('SoftLayer_Virtual_PlacementGroup', 'getObject', id=group_id, mask=mask)